Contract
0xB0D502E938ed5f4df2E681fE6E419ff29631d62b
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Contract Name:
Router
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
// imports
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "./Factory.sol";
import "./Pool.sol";
import "./Bridge.sol";
// interfaces
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./interfaces/IStargateRouter.sol";
import "./interfaces/IStargateReceiver.sol";
// libraries
import "@openzeppelin/contracts/math/SafeMath.sol";
contract Router is IStargateRouter, Ownable, ReentrancyGuard {
using SafeMath for uint256;
//---------------------------------------------------------------------------
// CONSTANTS
uint8 internal constant TYPE_REDEEM_LOCAL_RESPONSE = 1;
uint8 internal constant TYPE_REDEEM_LOCAL_CALLBACK_RETRY = 2;
uint8 internal constant TYPE_SWAP_REMOTE_RETRY = 3;
//---------------------------------------------------------------------------
// STRUCTS
struct CachedSwap {
address token;
uint256 amountLD;
address to;
bytes payload;
}
//---------------------------------------------------------------------------
// VARIABLES
Factory public factory; // used for creating pools
address public protocolFeeOwner; // can call methods to pull Stargate fees collected in pools
address public mintFeeOwner; // can call methods to pull mint fees collected in pools
Bridge public bridge;
mapping(uint16 => mapping(bytes => mapping(uint256 => bytes))) public revertLookup; //[chainId][srcAddress][nonce]
mapping(uint16 => mapping(bytes => mapping(uint256 => CachedSwap))) public cachedSwapLookup; //[chainId][srcAddress][nonce]
//---------------------------------------------------------------------------
// EVENTS
event Revert(uint8 bridgeFunctionType, uint16 chainId, bytes srcAddress, uint256 nonce);
event CachedSwapSaved(uint16 chainId, bytes srcAddress, uint256 nonce, address token, uint256 amountLD, address to, bytes payload, bytes reason);
event RevertRedeemLocal(uint16 srcChainId, uint256 _srcPoolId, uint256 _dstPoolId, bytes to, uint256 redeemAmountSD, uint256 mintAmountSD, uint256 indexed nonce, bytes indexed srcAddress);
event RedeemLocalCallback(uint16 srcChainId, bytes indexed srcAddress, uint256 indexed nonce, uint256 srcPoolId, uint256 dstPoolId, address to, uint256 amountSD, uint256 mintAmountSD);
//---------------------------------------------------------------------------
// MODIFIERS
modifier onlyBridge() {
require(msg.sender == address(bridge), "Bridge: caller must be Bridge.");
_;
}
constructor() {}
function setBridgeAndFactory(Bridge _bridge, Factory _factory) external onlyOwner {
require(address(bridge) == address(0x0) && address(factory) == address(0x0), "Stargate: bridge and factory already initialized"); // 1 time only
require(address(_bridge) != address(0x0), "Stargate: bridge cant be 0x0");
require(address(_factory) != address(0x0), "Stargate: factory cant be 0x0");
bridge = _bridge;
factory = _factory;
}
//---------------------------------------------------------------------------
// VIEWS
function _getPool(uint256 _poolId) internal view returns (Pool pool) {
pool = factory.getPool(_poolId);
require(address(pool) != address(0x0), "Stargate: Pool does not exist");
}
//---------------------------------------------------------------------------
// INTERNAL
function _safeTransferFrom(
address token,
address from,
address to,
uint256 value
) private {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), "Stargate: TRANSFER_FROM_FAILED");
}
//---------------------------------------------------------------------------
// LOCAL CHAIN FUNCTIONS
function addLiquidity(
uint256 _poolId,
uint256 _amountLD,
address _to
) external override nonReentrant {
Pool pool = _getPool(_poolId);
uint256 convertRate = pool.convertRate();
_amountLD = _amountLD.div(convertRate).mul(convertRate);
_safeTransferFrom(pool.token(), msg.sender, address(pool), _amountLD);
pool.mint(_to, _amountLD);
}
function swap(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLD,
uint256 _minAmountLD,
lzTxObj memory _lzTxParams,
bytes calldata _to,
bytes calldata _payload
) external payable override nonReentrant {
require(_amountLD > 0, "Stargate: cannot swap 0");
require(_refundAddress != address(0x0), "Stargate: _refundAddress cannot be 0x0");
Pool.SwapObj memory s;
Pool.CreditObj memory c;
{
Pool pool = _getPool(_srcPoolId);
{
uint256 convertRate = pool.convertRate();
_amountLD = _amountLD.div(convertRate).mul(convertRate);
}
s = pool.swap(_dstChainId, _dstPoolId, msg.sender, _amountLD, _minAmountLD, true);
_safeTransferFrom(pool.token(), msg.sender, address(pool), _amountLD);
c = pool.sendCredits(_dstChainId, _dstPoolId);
}
bridge.swap{value: msg.value}(_dstChainId, _srcPoolId, _dstPoolId, _refundAddress, c, s, _lzTxParams, _to, _payload);
}
function redeemRemote(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLP,
uint256 _minAmountLD,
bytes calldata _to,
lzTxObj memory _lzTxParams
) external payable override nonReentrant {
require(_refundAddress != address(0x0), "Stargate: _refundAddress cannot be 0x0");
require(_amountLP > 0, "Stargate: not enough lp to redeemRemote");
Pool.SwapObj memory s;
Pool.CreditObj memory c;
{
Pool pool = _getPool(_srcPoolId);
uint256 amountLD = pool.amountLPtoLD(_amountLP);
// perform a swap with no liquidity
s = pool.swap(_dstChainId, _dstPoolId, msg.sender, amountLD, _minAmountLD, false);
pool.redeemRemote(_dstChainId, _dstPoolId, msg.sender, _amountLP);
c = pool.sendCredits(_dstChainId, _dstPoolId);
}
// equal to a swap, with no payload ("0x") no dstGasForCall 0
bridge.swap{value: msg.value}(_dstChainId, _srcPoolId, _dstPoolId, _refundAddress, c, s, _lzTxParams, _to, "");
}
function instantRedeemLocal(
uint16 _srcPoolId,
uint256 _amountLP,
address _to
) external override nonReentrant returns (uint256 amountSD) {
require(_amountLP > 0, "Stargate: not enough lp to redeem");
Pool pool = _getPool(_srcPoolId);
amountSD = pool.instantRedeemLocal(msg.sender, _amountLP, _to);
}
function redeemLocal(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLP,
bytes calldata _to,
lzTxObj memory _lzTxParams
) external payable override nonReentrant {
require(_refundAddress != address(0x0), "Stargate: _refundAddress cannot be 0x0");
Pool pool = _getPool(_srcPoolId);
require(_amountLP > 0, "Stargate: not enough lp to redeem");
uint256 amountSD = pool.redeemLocal(msg.sender, _amountLP, _dstChainId, _dstPoolId, _to);
require(amountSD > 0, "Stargate: not enough lp to redeem with amountSD");
Pool.CreditObj memory c = pool.sendCredits(_dstChainId, _dstPoolId);
bridge.redeemLocal{value: msg.value}(_dstChainId, _srcPoolId, _dstPoolId, _refundAddress, c, amountSD, _to, _lzTxParams);
}
function sendCredits(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress
) external payable override nonReentrant {
require(_refundAddress != address(0x0), "Stargate: _refundAddress cannot be 0x0");
Pool pool = _getPool(_srcPoolId);
Pool.CreditObj memory c = pool.sendCredits(_dstChainId, _dstPoolId);
bridge.sendCredits{value: msg.value}(_dstChainId, _srcPoolId, _dstPoolId, _refundAddress, c);
}
function quoteLayerZeroFee(
uint16 _dstChainId,
uint8 _functionType,
bytes calldata _toAddress,
bytes calldata _transferAndCallPayload,
Router.lzTxObj memory _lzTxParams
) external view override returns (uint256, uint256) {
return bridge.quoteLayerZeroFee(_dstChainId, _functionType, _toAddress, _transferAndCallPayload, _lzTxParams);
}
function revertRedeemLocal(
uint16 _dstChainId,
bytes calldata _srcAddress,
uint256 _nonce,
address payable _refundAddress,
lzTxObj memory _lzTxParams
) external payable {
require(_refundAddress != address(0x0), "Stargate: _refundAddress cannot be 0x0");
bytes memory payload = revertLookup[_dstChainId][_srcAddress][_nonce];
require(payload.length > 0, "Stargate: no retry revert");
{
uint8 functionType;
assembly {
functionType := mload(add(payload, 32))
}
require(functionType == TYPE_REDEEM_LOCAL_RESPONSE, "Stargate: invalid function type");
}
// empty it
revertLookup[_dstChainId][_srcAddress][_nonce] = "";
uint256 srcPoolId;
uint256 dstPoolId;
assembly {
srcPoolId := mload(add(payload, 64))
dstPoolId := mload(add(payload, 96))
}
Pool.CreditObj memory c;
{
Pool pool = _getPool(dstPoolId);
c = pool.sendCredits(_dstChainId, srcPoolId);
}
bridge.redeemLocalCallback{value: msg.value}(_dstChainId, _refundAddress, c, _lzTxParams, payload);
}
function retryRevert(
uint16 _srcChainId,
bytes calldata _srcAddress,
uint256 _nonce
) external payable {
bytes memory payload = revertLookup[_srcChainId][_srcAddress][_nonce];
require(payload.length > 0, "Stargate: no retry revert");
// empty it
revertLookup[_srcChainId][_srcAddress][_nonce] = "";
uint8 functionType;
assembly {
functionType := mload(add(payload, 32))
}
if (functionType == TYPE_REDEEM_LOCAL_CALLBACK_RETRY) {
(, uint256 srcPoolId, uint256 dstPoolId, address to, uint256 amountSD, uint256 mintAmountSD) = abi.decode(
payload,
(uint8, uint256, uint256, address, uint256, uint256)
);
_redeemLocalCallback(_srcChainId, _srcAddress, _nonce, srcPoolId, dstPoolId, to, amountSD, mintAmountSD);
}
// for retrying the swapRemote. if it fails again, retry
else if (functionType == TYPE_SWAP_REMOTE_RETRY) {
(, uint256 srcPoolId, uint256 dstPoolId, uint256 dstGasForCall, address to, Pool.SwapObj memory s, bytes memory p) = abi.decode(
payload,
(uint8, uint256, uint256, uint256, address, Pool.SwapObj, bytes)
);
_swapRemote(_srcChainId, _srcAddress, _nonce, srcPoolId, dstPoolId, dstGasForCall, to, s, p);
} else {
revert("Stargate: invalid function type");
}
}
function clearCachedSwap(
uint16 _srcChainId,
bytes calldata _srcAddress,
uint256 _nonce
) external {
CachedSwap memory cs = cachedSwapLookup[_srcChainId][_srcAddress][_nonce];
require(cs.to != address(0x0), "Stargate: cache already cleared");
// clear the data
cachedSwapLookup[_srcChainId][_srcAddress][_nonce] = CachedSwap(address(0x0), 0, address(0x0), "");
IStargateReceiver(cs.to).sgReceive(_srcChainId, _srcAddress, _nonce, cs.token, cs.amountLD, cs.payload);
}
function creditChainPath(
uint16 _dstChainId,
uint256 _dstPoolId,
uint256 _srcPoolId,
Pool.CreditObj memory _c
) external onlyBridge {
Pool pool = _getPool(_srcPoolId);
pool.creditChainPath(_dstChainId, _dstPoolId, _c);
}
//---------------------------------------------------------------------------
// REMOTE CHAIN FUNCTIONS
function redeemLocalCheckOnRemote(
uint16 _srcChainId,
bytes memory _srcAddress,
uint256 _nonce,
uint256 _srcPoolId,
uint256 _dstPoolId,
uint256 _amountSD,
bytes calldata _to
) external onlyBridge {
Pool pool = _getPool(_dstPoolId);
try pool.redeemLocalCheckOnRemote(_srcChainId, _srcPoolId, _amountSD) returns (uint256 redeemAmountSD, uint256 mintAmountSD) {
revertLookup[_srcChainId][_srcAddress][_nonce] = abi.encode(
TYPE_REDEEM_LOCAL_RESPONSE,
_srcPoolId,
_dstPoolId,
redeemAmountSD,
mintAmountSD,
_to
);
emit RevertRedeemLocal(_srcChainId, _srcPoolId, _dstPoolId, _to, redeemAmountSD, mintAmountSD, _nonce, _srcAddress);
} catch {
// if the func fail, return [swapAmount: 0, mintAMount: _amountSD]
// swapAmount represents the amount of chainPath balance deducted on the remote side, which because the above tx failed, should be 0
// mintAmount is the full amount of tokens the user attempted to redeem on the src side, which gets converted back into the lp amount
revertLookup[_srcChainId][_srcAddress][_nonce] = abi.encode(TYPE_REDEEM_LOCAL_RESPONSE, _srcPoolId, _dstPoolId, 0, _amountSD, _to);
emit Revert(TYPE_REDEEM_LOCAL_RESPONSE, _srcChainId, _srcAddress, _nonce);
}
}
function redeemLocalCallback(
uint16 _srcChainId,
bytes memory _srcAddress,
uint256 _nonce,
uint256 _srcPoolId,
uint256 _dstPoolId,
address _to,
uint256 _amountSD,
uint256 _mintAmountSD
) external onlyBridge {
_redeemLocalCallback(_srcChainId, _srcAddress, _nonce, _srcPoolId, _dstPoolId, _to, _amountSD, _mintAmountSD);
}
function _redeemLocalCallback(
uint16 _srcChainId,
bytes memory _srcAddress,
uint256 _nonce,
uint256 _srcPoolId,
uint256 _dstPoolId,
address _to,
uint256 _amountSD,
uint256 _mintAmountSD
) internal {
Pool pool = _getPool(_dstPoolId);
try pool.redeemLocalCallback(_srcChainId, _srcPoolId, _to, _amountSD, _mintAmountSD) {} catch {
revertLookup[_srcChainId][_srcAddress][_nonce] = abi.encode(
TYPE_REDEEM_LOCAL_CALLBACK_RETRY,
_srcPoolId,
_dstPoolId,
_to,
_amountSD,
_mintAmountSD
);
emit Revert(TYPE_REDEEM_LOCAL_CALLBACK_RETRY, _srcChainId, _srcAddress, _nonce);
}
emit RedeemLocalCallback(_srcChainId, _srcAddress, _nonce, _srcPoolId, _dstPoolId, _to, _amountSD, _mintAmountSD);
}
function swapRemote(
uint16 _srcChainId,
bytes memory _srcAddress,
uint256 _nonce,
uint256 _srcPoolId,
uint256 _dstPoolId,
uint256 _dstGasForCall,
address _to,
Pool.SwapObj memory _s,
bytes memory _payload
) external onlyBridge {
_swapRemote(_srcChainId, _srcAddress, _nonce, _srcPoolId, _dstPoolId, _dstGasForCall, _to, _s, _payload);
}
function _swapRemote(
uint16 _srcChainId,
bytes memory _srcAddress,
uint256 _nonce,
uint256 _srcPoolId,
uint256 _dstPoolId,
uint256 _dstGasForCall,
address _to,
Pool.SwapObj memory _s,
bytes memory _payload
) internal {
Pool pool = _getPool(_dstPoolId);
// first try catch the swap remote
try pool.swapRemote(_srcChainId, _srcPoolId, _to, _s) returns (uint256 amountLD) {
if (_payload.length > 0) {
// then try catch the external contract call
try IStargateReceiver(_to).sgReceive{gas: _dstGasForCall}(_srcChainId, _srcAddress, _nonce, pool.token(), amountLD, _payload) {
// do nothing
} catch (bytes memory reason) {
cachedSwapLookup[_srcChainId][_srcAddress][_nonce] = CachedSwap(pool.token(), amountLD, _to, _payload);
emit CachedSwapSaved(_srcChainId, _srcAddress, _nonce, pool.token(), amountLD, _to, _payload, reason);
}
}
} catch {
revertLookup[_srcChainId][_srcAddress][_nonce] = abi.encode(
TYPE_SWAP_REMOTE_RETRY,
_srcPoolId,
_dstPoolId,
_dstGasForCall,
_to,
_s,
_payload
);
emit Revert(TYPE_SWAP_REMOTE_RETRY, _srcChainId, _srcAddress, _nonce);
}
}
//---------------------------------------------------------------------------
// DAO Calls
function createPool(
uint256 _poolId,
address _token,
uint8 _sharedDecimals,
uint8 _localDecimals,
string memory _name,
string memory _symbol
) external onlyOwner returns (address) {
require(_token != address(0x0), "Stargate: _token cannot be 0x0");
return factory.createPool(_poolId, _token, _sharedDecimals, _localDecimals, _name, _symbol);
}
function createChainPath(
uint256 _poolId,
uint16 _dstChainId,
uint256 _dstPoolId,
uint256 _weight
) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.createChainPath(_dstChainId, _dstPoolId, _weight);
}
function activateChainPath(
uint256 _poolId,
uint16 _dstChainId,
uint256 _dstPoolId
) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.activateChainPath(_dstChainId, _dstPoolId);
}
function setWeightForChainPath(
uint256 _poolId,
uint16 _dstChainId,
uint256 _dstPoolId,
uint16 _weight
) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.setWeightForChainPath(_dstChainId, _dstPoolId, _weight);
}
function setProtocolFeeOwner(address _owner) external onlyOwner {
require(_owner != address(0x0), "Stargate: _owner cannot be 0x0");
protocolFeeOwner = _owner;
}
function setMintFeeOwner(address _owner) external onlyOwner {
require(_owner != address(0x0), "Stargate: _owner cannot be 0x0");
mintFeeOwner = _owner;
}
function setFees(uint256 _poolId, uint256 _mintFeeBP) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.setFee(_mintFeeBP);
}
function setFeeLibrary(uint256 _poolId, address _feeLibraryAddr) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.setFeeLibrary(_feeLibraryAddr);
}
function setSwapStop(uint256 _poolId, bool _swapStop) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.setSwapStop(_swapStop);
}
function setDeltaParam(
uint256 _poolId,
bool _batched,
uint256 _swapDeltaBP,
uint256 _lpDeltaBP,
bool _defaultSwapMode,
bool _defaultLPMode
) external onlyOwner {
Pool pool = _getPool(_poolId);
pool.setDeltaParam(_batched, _swapDeltaBP, _lpDeltaBP, _defaultSwapMode, _defaultLPMode);
}
function callDelta(uint256 _poolId, bool _fullMode) external {
Pool pool = _getPool(_poolId);
pool.callDelta(_fullMode);
}
function withdrawMintFee(uint256 _poolId, address _to) external {
require(mintFeeOwner == msg.sender, "Stargate: only mintFeeOwner");
Pool pool = _getPool(_poolId);
pool.withdrawMintFeeBalance(_to);
}
function withdrawProtocolFee(uint256 _poolId, address _to) external {
require(protocolFeeOwner == msg.sender, "Stargate: only protocolFeeOwner");
Pool pool = _getPool(_poolId);
pool.withdrawProtocolFeeBalance(_to);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor () {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./Pool.sol";
contract Factory is Ownable {
using SafeMath for uint256;
//---------------------------------------------------------------------------
// VARIABLES
mapping(uint256 => Pool) public getPool; // poolId -> PoolInfo
address[] public allPools;
address public immutable router;
address public defaultFeeLibrary; // address for retrieving fee params for swaps
//---------------------------------------------------------------------------
// MODIFIERS
modifier onlyRouter() {
require(msg.sender == router, "Stargate: caller must be Router.");
_;
}
constructor(address _router) {
require(_router != address(0x0), "Stargate: _router cant be 0x0"); // 1 time only
router = _router;
}
function setDefaultFeeLibrary(address _defaultFeeLibrary) external onlyOwner {
require(_defaultFeeLibrary != address(0x0), "Stargate: fee library cant be 0x0");
defaultFeeLibrary = _defaultFeeLibrary;
}
function allPoolsLength() external view returns (uint256) {
return allPools.length;
}
function createPool(
uint256 _poolId,
address _token,
uint8 _sharedDecimals,
uint8 _localDecimals,
string memory _name,
string memory _symbol
) public onlyRouter returns (address poolAddress) {
require(address(getPool[_poolId]) == address(0x0), "Stargate: Pool already created");
Pool pool = new Pool(_poolId, router, _token, _sharedDecimals, _localDecimals, defaultFeeLibrary, _name, _symbol);
getPool[_poolId] = pool;
poolAddress = address(pool);
allPools.push(poolAddress);
}
function renounceOwnership() public override onlyOwner {}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
// imports
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
import "./LPTokenERC20.sol";
import "./interfaces/IStargateFeeLibrary.sol";
// libraries
import "@openzeppelin/contracts/math/SafeMath.sol";
/// Pool contracts on other chains and managed by the Stargate protocol.
contract Pool is LPTokenERC20, ReentrancyGuard {
using SafeMath for uint256;
//---------------------------------------------------------------------------
// CONSTANTS
bytes4 private constant SELECTOR = bytes4(keccak256(bytes("transfer(address,uint256)")));
uint256 public constant BP_DENOMINATOR = 10000;
//---------------------------------------------------------------------------
// STRUCTS
struct ChainPath {
bool ready; // indicate if the counter chainPath has been created.
uint16 dstChainId;
uint256 dstPoolId;
uint256 weight;
uint256 balance;
uint256 lkb;
uint256 credits;
uint256 idealBalance;
}
struct SwapObj {
uint256 amount;
uint256 eqFee;
uint256 eqReward;
uint256 lpFee;
uint256 protocolFee;
uint256 lkbRemove;
}
struct CreditObj {
uint256 credits;
uint256 idealBalance;
}
//---------------------------------------------------------------------------
// VARIABLES
// chainPath
ChainPath[] public chainPaths; // list of connected chains with shared pools
mapping(uint16 => mapping(uint256 => uint256)) public chainPathIndexLookup; // lookup for chainPath by chainId => poolId =>index
// metadata
uint256 public immutable poolId; // shared id between chains to represent same pool
uint256 public sharedDecimals; // the shared decimals (lowest common decimals between chains)
uint256 public localDecimals; // the decimals for the token
uint256 public immutable convertRate; // the decimals for the token
address public immutable token; // the token for the pool
address public immutable router; // the token for the pool
bool public stopSwap; // flag to stop swapping in extreme cases
// Fee and Liquidity
uint256 public totalLiquidity; // the total amount of tokens added on this side of the chain (fees + deposits - withdrawals)
uint256 public totalWeight; // total weight for pool percentages
uint256 public mintFeeBP; // fee basis points for the mint/deposit
uint256 public protocolFeeBalance; // fee balance created from dao fee
uint256 public mintFeeBalance; // fee balance created from mint fee
uint256 public eqFeePool; // pool rewards in Shared Decimal format. indicate the total budget for reverse swap incentive
address public feeLibrary; // address for retrieving fee params for swaps
// Delta related
uint256 public deltaCredit; // credits accumulated from txn
bool public batched; // flag to indicate if we want batch processing.
bool public defaultSwapMode; // flag for the default mode for swap
bool public defaultLPMode; // flag for the default mode for lp
uint256 public swapDeltaBP; // basis points of poolCredits to activate Delta in swap
uint256 public lpDeltaBP; // basis points of poolCredits to activate Delta in liquidity events
//---------------------------------------------------------------------------
// EVENTS
event Mint(address to, uint256 amountLP, uint256 amountSD, uint256 mintFeeAmountSD);
event Burn(address from, uint256 amountLP, uint256 amountSD);
event RedeemLocalCallback(address _to, uint256 _amountSD, uint256 _amountToMintSD);
event Swap(
uint16 chainId,
uint256 dstPoolId,
address from,
uint256 amountSD,
uint256 eqReward,
uint256 eqFee,
uint256 protocolFee,
uint256 lpFee
);
event SendCredits(uint16 dstChainId, uint256 dstPoolId, uint256 credits, uint256 idealBalance);
event RedeemRemote(uint16 chainId, uint256 dstPoolId, address from, uint256 amountLP, uint256 amountSD);
event RedeemLocal(address from, uint256 amountLP, uint256 amountSD, uint16 chainId, uint256 dstPoolId, bytes to);
event InstantRedeemLocal(address from, uint256 amountLP, uint256 amountSD, address to);
event CreditChainPath(uint16 chainId, uint256 srcPoolId, uint256 amountSD, uint256 idealBalance);
event SwapRemote(address to, uint256 amountSD, uint256 protocolFee, uint256 dstFee);
event WithdrawRemote(uint16 srcChainId, uint256 srcPoolId, uint256 swapAmount, uint256 mintAmount);
event ChainPathUpdate(uint16 dstChainId, uint256 dstPoolId, uint256 weight);
event FeesUpdated(uint256 mintFeeBP);
event FeeLibraryUpdated(address feeLibraryAddr);
event StopSwapUpdated(bool swapStop);
event WithdrawProtocolFeeBalance(address to, uint256 amountSD);
event WithdrawMintFeeBalance(address to, uint256 amountSD);
event DeltaParamUpdated(bool batched, uint256 swapDeltaBP, uint256 lpDeltaBP, bool defaultSwapMode, bool defaultLPMode);
//---------------------------------------------------------------------------
// MODIFIERS
modifier onlyRouter() {
require(msg.sender == router, "Stargate: only the router can call this method");
_;
}
constructor(
uint256 _poolId,
address _router,
address _token,
uint256 _sharedDecimals,
uint256 _localDecimals,
address _feeLibrary,
string memory _name,
string memory _symbol
) LPTokenERC20(_name, _symbol) {
require(_token != address(0x0), "Stargate: _token cannot be 0x0");
require(_router != address(0x0), "Stargate: _router cannot be 0x0");
poolId = _poolId;
router = _router;
token = _token;
sharedDecimals = _sharedDecimals;
decimals = uint8(_sharedDecimals);
localDecimals = _localDecimals;
convertRate = 10**(uint256(localDecimals).sub(sharedDecimals));
totalWeight = 0;
feeLibrary = _feeLibrary;
//delta algo related
batched = false;
defaultSwapMode = true;
defaultLPMode = true;
}
function getChainPathsLength() public view returns (uint256) {
return chainPaths.length;
}
//---------------------------------------------------------------------------
// LOCAL CHAIN FUNCTIONS
function mint(address _to, uint256 _amountLD) external nonReentrant onlyRouter returns (uint256) {
return _mintLocal(_to, _amountLD, true, true);
}
// Local Remote
// ------- ---------
// swap -> swapRemote
function swap(
uint16 _dstChainId,
uint256 _dstPoolId,
address _from,
uint256 _amountLD,
uint256 _minAmountLD,
bool newLiquidity
) external nonReentrant onlyRouter returns (SwapObj memory) {
require(!stopSwap, "Stargate: swap func stopped");
ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
require(cp.ready == true, "Stargate: counter chainPath is not ready");
uint256 amountSD = amountLDtoSD(_amountLD);
uint256 minAmountSD = amountLDtoSD(_minAmountLD);
// request fee params from library
SwapObj memory s = IStargateFeeLibrary(feeLibrary).getFees(poolId, _dstPoolId, _dstChainId, _from, amountSD);
// equilibrium fee and reward. note eqFee/eqReward are separated from swap liquidity
eqFeePool = eqFeePool.sub(s.eqReward);
// update the new amount the user gets minus the fees
s.amount = amountSD.sub(s.eqFee).sub(s.protocolFee).sub(s.lpFee);
// users will also get the eqReward
require(s.amount.add(s.eqReward) >= minAmountSD, "Stargate: slippage too high");
// behaviours
// - protocolFee: booked, stayed and withdrawn at remote.
// - eqFee: booked, stayed and withdrawn at remote.
// - lpFee: booked and stayed at remote, can be withdrawn anywhere
s.lkbRemove = amountSD.sub(s.lpFee).add(s.eqReward);
// check for transfer solvency.
require(cp.balance >= s.lkbRemove, "Stargate: dst balance too low");
cp.balance = cp.balance.sub(s.lkbRemove);
if (newLiquidity) {
deltaCredit = deltaCredit.add(amountSD).add(s.eqReward);
} else if (s.eqReward > 0) {
deltaCredit = deltaCredit.add(s.eqReward);
}
// distribute credits on condition.
if (!batched || deltaCredit >= totalLiquidity.mul(swapDeltaBP).div(BP_DENOMINATOR)) {
_delta(defaultSwapMode);
}
emit Swap(_dstChainId, _dstPoolId, _from, s.amount, s.eqReward, s.eqFee, s.protocolFee, s.lpFee);
return s;
}
// Local Remote
// ------- ---------
// sendCredits -> creditChainPath
function sendCredits(uint16 _dstChainId, uint256 _dstPoolId) external nonReentrant onlyRouter returns (CreditObj memory c) {
ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
require(cp.ready == true, "Stargate: counter chainPath is not ready");
cp.lkb = cp.lkb.add(cp.credits);
c.idealBalance = totalLiquidity.mul(cp.weight).div(totalWeight);
c.credits = cp.credits;
cp.credits = 0;
emit SendCredits(_dstChainId, _dstPoolId, c.credits, c.idealBalance);
}
// Local Remote
// ------- ---------
// redeemRemote -> swapRemote
function redeemRemote(
uint16 _dstChainId,
uint256 _dstPoolId,
address _from,
uint256 _amountLP
) external nonReentrant onlyRouter {
require(_from != address(0x0), "Stargate: _from cannot be 0x0");
uint256 amountSD = _burnLocal(_from, _amountLP);
//run Delta
if (!batched || deltaCredit > totalLiquidity.mul(lpDeltaBP).div(BP_DENOMINATOR)) {
_delta(defaultLPMode);
}
uint256 amountLD = amountSDtoLD(amountSD);
emit RedeemRemote(_dstChainId, _dstPoolId, _from, _amountLP, amountLD);
}
function instantRedeemLocal(
address _from,
uint256 _amountLP,
address _to
) external nonReentrant onlyRouter returns (uint256 amountSD) {
require(_from != address(0x0), "Stargate: _from cannot be 0x0");
uint256 _deltaCredit = deltaCredit; // sload optimization.
uint256 _capAmountLP = _amountSDtoLP(_deltaCredit);
if (_amountLP > _capAmountLP) _amountLP = _capAmountLP;
amountSD = _burnLocal(_from, _amountLP);
deltaCredit = _deltaCredit.sub(amountSD);
uint256 amountLD = amountSDtoLD(amountSD);
_safeTransfer(token, _to, amountLD);
emit InstantRedeemLocal(_from, _amountLP, amountSD, _to);
}
// Local Remote
// ------- ---------
// redeemLocal -> redeemLocalCheckOnRemote
// redeemLocalCallback <-
function redeemLocal(
address _from,
uint256 _amountLP,
uint16 _dstChainId,
uint256 _dstPoolId,
bytes calldata _to
) external nonReentrant onlyRouter returns (uint256 amountSD) {
require(_from != address(0x0), "Stargate: _from cannot be 0x0");
// safeguard.
require(chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]].ready == true, "Stargate: counter chainPath is not ready");
amountSD = _burnLocal(_from, _amountLP);
// run Delta
if (!batched || deltaCredit > totalLiquidity.mul(lpDeltaBP).div(BP_DENOMINATOR)) {
_delta(false);
}
emit RedeemLocal(_from, _amountLP, amountSD, _dstChainId, _dstPoolId, _to);
}
//---------------------------------------------------------------------------
// REMOTE CHAIN FUNCTIONS
// Local Remote
// ------- ---------
// sendCredits -> creditChainPath
function creditChainPath(
uint16 _dstChainId,
uint256 _dstPoolId,
CreditObj memory _c
) external nonReentrant onlyRouter {
ChainPath storage cp = chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]];
cp.balance = cp.balance.add(_c.credits);
if (cp.idealBalance != _c.idealBalance) {
cp.idealBalance = _c.idealBalance;
}
emit CreditChainPath(_dstChainId, _dstPoolId, _c.credits, _c.idealBalance);
}
// Local Remote
// ------- ---------
// swap -> swapRemote
function swapRemote(
uint16 _srcChainId,
uint256 _srcPoolId,
address _to,
SwapObj memory _s
) external nonReentrant onlyRouter returns (uint256 amountLD) {
// booking lpFee
totalLiquidity = totalLiquidity.add(_s.lpFee);
// booking eqFee
eqFeePool = eqFeePool.add(_s.eqFee);
// booking stargateFee
protocolFeeBalance = protocolFeeBalance.add(_s.protocolFee);
// update LKB
uint256 chainPathIndex = chainPathIndexLookup[_srcChainId][_srcPoolId];
chainPaths[chainPathIndex].lkb = chainPaths[chainPathIndex].lkb.sub(_s.lkbRemove);
// user receives the amount + the srcReward
amountLD = amountSDtoLD(_s.amount.add(_s.eqReward));
_safeTransfer(token, _to, amountLD);
emit SwapRemote(_to, _s.amount.add(_s.eqReward), _s.protocolFee, _s.eqFee);
}
// Local Remote
// ------- ---------
// redeemLocal -> redeemLocalCheckOnRemote
// redeemLocalCallback <-
function redeemLocalCallback(
uint16 _srcChainId,
uint256 _srcPoolId,
address _to,
uint256 _amountSD,
uint256 _amountToMintSD
) external nonReentrant onlyRouter {
if (_amountToMintSD > 0) {
_mintLocal(_to, amountSDtoLD(_amountToMintSD), false, false);
}
ChainPath storage cp = getAndCheckCP(_srcChainId, _srcPoolId);
cp.lkb = cp.lkb.sub(_amountSD);
uint256 amountLD = amountSDtoLD(_amountSD);
_safeTransfer(token, _to, amountLD);
emit RedeemLocalCallback(_to, _amountSD, _amountToMintSD);
}
// Local Remote
// ------- ---------
// redeemLocal(amount) -> redeemLocalCheckOnRemote
// redeemLocalCallback <-
function redeemLocalCheckOnRemote(
uint16 _srcChainId,
uint256 _srcPoolId,
uint256 _amountSD
) external nonReentrant onlyRouter returns (uint256 swapAmount, uint256 mintAmount) {
ChainPath storage cp = getAndCheckCP(_srcChainId, _srcPoolId);
if (_amountSD > cp.balance) {
mintAmount = _amountSD - cp.balance;
swapAmount = cp.balance;
cp.balance = 0;
} else {
cp.balance = cp.balance.sub(_amountSD);
swapAmount = _amountSD;
mintAmount = 0;
}
emit WithdrawRemote(_srcChainId, _srcPoolId, swapAmount, mintAmount);
}
//---------------------------------------------------------------------------
// DAO Calls
function createChainPath(
uint16 _dstChainId,
uint256 _dstPoolId,
uint256 _weight
) external onlyRouter {
for (uint256 i = 0; i < chainPaths.length; ++i) {
ChainPath memory cp = chainPaths[i];
bool exists = cp.dstChainId == _dstChainId && cp.dstPoolId == _dstPoolId;
require(!exists, "Stargate: cant createChainPath of existing dstChainId and _dstPoolId");
}
totalWeight = totalWeight.add(_weight);
chainPathIndexLookup[_dstChainId][_dstPoolId] = chainPaths.length;
chainPaths.push(ChainPath(false, _dstChainId, _dstPoolId, _weight, 0, 0, 0, 0));
emit ChainPathUpdate(_dstChainId, _dstPoolId, _weight);
}
function setWeightForChainPath(
uint16 _dstChainId,
uint256 _dstPoolId,
uint16 _weight
) external onlyRouter {
ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
totalWeight = totalWeight.sub(cp.weight).add(_weight);
cp.weight = _weight;
emit ChainPathUpdate(_dstChainId, _dstPoolId, _weight);
}
function setFee(uint256 _mintFeeBP) external onlyRouter {
require(_mintFeeBP <= BP_DENOMINATOR, "Bridge: cum fees > 100%");
mintFeeBP = _mintFeeBP;
emit FeesUpdated(mintFeeBP);
}
function setFeeLibrary(address _feeLibraryAddr) external onlyRouter {
require(_feeLibraryAddr != address(0x0), "Stargate: fee library cant be 0x0");
feeLibrary = _feeLibraryAddr;
emit FeeLibraryUpdated(_feeLibraryAddr);
}
function setSwapStop(bool _swapStop) external onlyRouter {
stopSwap = _swapStop;
emit StopSwapUpdated(_swapStop);
}
function setDeltaParam(
bool _batched,
uint256 _swapDeltaBP,
uint256 _lpDeltaBP,
bool _defaultSwapMode,
bool _defaultLPMode
) external onlyRouter {
require(_swapDeltaBP <= BP_DENOMINATOR && _lpDeltaBP <= BP_DENOMINATOR, "Stargate: wrong Delta param");
batched = _batched;
swapDeltaBP = _swapDeltaBP;
lpDeltaBP = _lpDeltaBP;
defaultSwapMode = _defaultSwapMode;
defaultLPMode = _defaultLPMode;
emit DeltaParamUpdated(_batched, _swapDeltaBP, _lpDeltaBP, _defaultSwapMode, _defaultLPMode);
}
function callDelta(bool _fullMode) external onlyRouter {
_delta(_fullMode);
}
function activateChainPath(uint16 _dstChainId, uint256 _dstPoolId) external onlyRouter {
ChainPath storage cp = getAndCheckCP(_dstChainId, _dstPoolId);
require(cp.ready == false, "Stargate: chainPath is already active");
// this func will only be called once
cp.ready = true;
}
function withdrawProtocolFeeBalance(address _to) external onlyRouter {
if (protocolFeeBalance > 0) {
uint256 amountOfLD = amountSDtoLD(protocolFeeBalance);
protocolFeeBalance = 0;
_safeTransfer(token, _to, amountOfLD);
emit WithdrawProtocolFeeBalance(_to, amountOfLD);
}
}
function withdrawMintFeeBalance(address _to) external onlyRouter {
if (mintFeeBalance > 0) {
uint256 amountOfLD = amountSDtoLD(mintFeeBalance);
mintFeeBalance = 0;
_safeTransfer(token, _to, amountOfLD);
emit WithdrawMintFeeBalance(_to, amountOfLD);
}
}
//---------------------------------------------------------------------------
// INTERNAL
// Conversion Helpers
//---------------------------------------------------------------------------
function amountLPtoLD(uint256 _amountLP) external view returns (uint256) {
return amountSDtoLD(_amountLPtoSD(_amountLP));
}
function _amountLPtoSD(uint256 _amountLP) internal view returns (uint256) {
require(totalSupply > 0, "Stargate: cant convert LPtoSD when totalSupply == 0");
return _amountLP.mul(totalLiquidity).div(totalSupply);
}
function _amountSDtoLP(uint256 _amountSD) internal view returns (uint256) {
require(totalLiquidity > 0, "Stargate: cant convert SDtoLP when totalLiq == 0");
return _amountSD.mul(totalSupply).div(totalLiquidity);
}
function amountSDtoLD(uint256 _amount) internal view returns (uint256) {
return _amount.mul(convertRate);
}
function amountLDtoSD(uint256 _amount) internal view returns (uint256) {
return _amount.div(convertRate);
}
function getAndCheckCP(uint16 _dstChainId, uint256 _dstPoolId) internal view returns (ChainPath storage) {
require(chainPaths.length > 0, "Stargate: no chainpaths exist");
ChainPath storage cp = chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]];
require(cp.dstChainId == _dstChainId && cp.dstPoolId == _dstPoolId, "Stargate: local chainPath does not exist");
return cp;
}
function getChainPath(uint16 _dstChainId, uint256 _dstPoolId) external view returns (ChainPath memory) {
ChainPath memory cp = chainPaths[chainPathIndexLookup[_dstChainId][_dstPoolId]];
require(cp.dstChainId == _dstChainId && cp.dstPoolId == _dstPoolId, "Stargate: local chainPath does not exist");
return cp;
}
function _burnLocal(address _from, uint256 _amountLP) internal returns (uint256) {
require(totalSupply > 0, "Stargate: cant burn when totalSupply == 0");
uint256 amountOfLPTokens = balanceOf[_from];
require(amountOfLPTokens >= _amountLP, "Stargate: not enough LP tokens to burn");
uint256 amountSD = _amountLP.mul(totalLiquidity).div(totalSupply);
//subtract totalLiquidity accordingly
totalLiquidity = totalLiquidity.sub(amountSD);
_burn(_from, _amountLP);
emit Burn(_from, _amountLP, amountSD);
return amountSD;
}
function _delta(bool fullMode) internal {
if (deltaCredit > 0 && totalWeight > 0) {
uint256 cpLength = chainPaths.length;
uint256[] memory deficit = new uint256[](cpLength);
uint256 totalDeficit = 0;
// algorithm steps 6-9: calculate the total and the amounts required to get to balance state
for (uint256 i = 0; i < cpLength; ++i) {
ChainPath storage cp = chainPaths[i];
// (liquidity * (weight/totalWeight)) - (lkb+credits)
uint256 balLiq = totalLiquidity.mul(cp.weight).div(totalWeight);
uint256 currLiq = cp.lkb.add(cp.credits);
if (balLiq > currLiq) {
// save gas since we know balLiq > currLiq and we know deficit[i] > 0
deficit[i] = balLiq - currLiq;
totalDeficit = totalDeficit.add(deficit[i]);
}
}
// indicates how much delta credit is distributed
uint256 spent;
// handle credits with 2 tranches. the [ < totalDeficit] [excessCredit]
// run full Delta, allocate all credits
if (totalDeficit == 0) {
// only fullMode delta will allocate excess credits
if (fullMode && deltaCredit > 0) {
// credit ChainPath by weights
for (uint256 i = 0; i < cpLength; ++i) {
ChainPath storage cp = chainPaths[i];
// credits = credits + toBalanceChange + remaining allocation based on weight
uint256 amtToCredit = deltaCredit.mul(cp.weight).div(totalWeight);
spent = spent.add(amtToCredit);
cp.credits = cp.credits.add(amtToCredit);
}
} // else do nth
} else if (totalDeficit <= deltaCredit) {
if (fullMode) {
// algorithm step 13: calculate amount to disperse to bring to balance state or as close as possible
uint256 excessCredit = deltaCredit - totalDeficit;
// algorithm steps 14-16: calculate credits
for (uint256 i = 0; i < cpLength; ++i) {
if (deficit[i] > 0) {
ChainPath storage cp = chainPaths[i];
// credits = credits + deficit + remaining allocation based on weight
uint256 amtToCredit = deficit[i].add(excessCredit.mul(cp.weight).div(totalWeight));
spent = spent.add(amtToCredit);
cp.credits = cp.credits.add(amtToCredit);
}
}
} else {
// totalDeficit <= deltaCredit but not running fullMode
// credit chainPaths as is if any deficit, not using all deltaCredit
for (uint256 i = 0; i < cpLength; ++i) {
if (deficit[i] > 0) {
ChainPath storage cp = chainPaths[i];
uint256 amtToCredit = deficit[i];
spent = spent.add(amtToCredit);
cp.credits = cp.credits.add(amtToCredit);
}
}
}
} else {
// totalDeficit > deltaCredit, fullMode or not, normalize the deficit by deltaCredit
for (uint256 i = 0; i < cpLength; ++i) {
if (deficit[i] > 0) {
ChainPath storage cp = chainPaths[i];
uint256 proportionalDeficit = deficit[i].mul(deltaCredit).div(totalDeficit);
spent = spent.add(proportionalDeficit);
cp.credits = cp.credits.add(proportionalDeficit);
}
}
}
// deduct the amount of credit sent
deltaCredit = deltaCredit.sub(spent);
}
}
function _mintLocal(
address _to,
uint256 _amountLD,
bool _feesEnabled,
bool _creditDelta
) internal returns (uint256 amountSD) {
require(totalWeight > 0, "Stargate: No ChainPaths exist");
amountSD = amountLDtoSD(_amountLD);
uint256 mintFeeSD = 0;
if (_feesEnabled) {
mintFeeSD = amountSD.mul(mintFeeBP).div(BP_DENOMINATOR);
amountSD = amountSD.sub(mintFeeSD);
mintFeeBalance = mintFeeBalance.add(mintFeeSD);
}
if (_creditDelta) {
deltaCredit = deltaCredit.add(amountSD);
}
uint256 amountLPTokens = amountSD;
if (totalSupply != 0) {
amountLPTokens = amountSD.mul(totalSupply).div(totalLiquidity);
}
totalLiquidity = totalLiquidity.add(amountSD);
_mint(_to, amountLPTokens);
emit Mint(_to, amountLPTokens, amountSD, mintFeeSD);
// add to credits and call delta. short circuit to save gas
if (!batched || deltaCredit > totalLiquidity.mul(lpDeltaBP).div(BP_DENOMINATOR)) {
_delta(defaultLPMode);
}
}
function _safeTransfer(
address _token,
address _to,
uint256 _value
) private {
(bool success, bytes memory data) = _token.call(abi.encodeWithSelector(SELECTOR, _to, _value));
require(success && (data.length == 0 || abi.decode(data, (bool))), "Stargate: TRANSFER_FAILED");
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
// imports
import "@openzeppelin/contracts/access/Ownable.sol";
import "./Pool.sol";
import "./Router.sol";
// interfaces
import "@layerzerolabs/contracts/contracts/interfaces/ILayerZeroReceiver.sol";
import "@layerzerolabs/contracts/contracts/interfaces/ILayerZeroEndpoint.sol";
import "@layerzerolabs/contracts/contracts/interfaces/ILayerZeroUserApplicationConfig.sol";
// libraries
import "@openzeppelin/contracts/math/SafeMath.sol";
contract Bridge is Ownable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig {
using SafeMath for uint256;
//---------------------------------------------------------------------------
// CONSTANTS
uint8 internal constant TYPE_SWAP_REMOTE = 1;
uint8 internal constant TYPE_ADD_LIQUIDITY = 2;
uint8 internal constant TYPE_REDEEM_LOCAL_CALL_BACK = 3;
uint8 internal constant TYPE_WITHDRAW_REMOTE = 4;
//---------------------------------------------------------------------------
// VARIABLES
ILayerZeroEndpoint public immutable layerZeroEndpoint;
mapping(uint16 => bytes) public bridgeLookup;
mapping(uint16 => mapping(uint8 => uint256)) public gasLookup;
Router public immutable router;
bool public useLayerZeroToken;
//---------------------------------------------------------------------------
// EVENTS
event SendMsg(uint8 msgType, uint64 nonce);
//---------------------------------------------------------------------------
// MODIFIERS
modifier onlyRouter() {
require(msg.sender == address(router), "Stargate: caller must be Router.");
_;
}
constructor(address _layerZeroEndpoint, address _router) {
require(_layerZeroEndpoint != address(0x0), "Stargate: _layerZeroEndpoint cannot be 0x0");
require(_router != address(0x0), "Stargate: _router cannot be 0x0");
layerZeroEndpoint = ILayerZeroEndpoint(_layerZeroEndpoint);
router = Router(_router);
}
//---------------------------------------------------------------------------
// EXTERNAL functions
function lzReceive(
uint16 _srcChainId,
bytes memory _srcAddress,
uint64 _nonce,
bytes memory _payload
) external override {
require(msg.sender == address(layerZeroEndpoint), "Stargate: only LayerZero endpoint can call lzReceive");
require(
_srcAddress.length == bridgeLookup[_srcChainId].length && keccak256(_srcAddress) == keccak256(bridgeLookup[_srcChainId]),
"Stargate: bridge does not match"
);
uint8 functionType;
assembly {
functionType := mload(add(_payload, 32))
}
if (functionType == TYPE_SWAP_REMOTE) {
(
,
uint256 srcPoolId,
uint256 dstPoolId,
uint256 dstGasForCall,
Pool.CreditObj memory c,
Pool.SwapObj memory s,
bytes memory to,
bytes memory payload
) = abi.decode(_payload, (uint8, uint256, uint256, uint256, Pool.CreditObj, Pool.SwapObj, bytes, bytes));
address toAddress;
assembly {
toAddress := mload(add(to, 20))
}
router.creditChainPath(_srcChainId, srcPoolId, dstPoolId, c);
router.swapRemote(_srcChainId, _srcAddress, _nonce, srcPoolId, dstPoolId, dstGasForCall, toAddress, s, payload);
} else if (functionType == TYPE_ADD_LIQUIDITY) {
(, uint256 srcPoolId, uint256 dstPoolId, Pool.CreditObj memory c) = abi.decode(_payload, (uint8, uint256, uint256, Pool.CreditObj));
router.creditChainPath(_srcChainId, srcPoolId, dstPoolId, c);
} else if (functionType == TYPE_REDEEM_LOCAL_CALL_BACK) {
(, uint256 srcPoolId, uint256 dstPoolId, Pool.CreditObj memory c, uint256 amountSD, uint256 mintAmountSD, bytes memory to) = abi
.decode(_payload, (uint8, uint256, uint256, Pool.CreditObj, uint256, uint256, bytes));
address toAddress;
assembly {
toAddress := mload(add(to, 20))
}
router.creditChainPath(_srcChainId, srcPoolId, dstPoolId, c);
router.redeemLocalCallback(_srcChainId, _srcAddress, _nonce, srcPoolId, dstPoolId, toAddress, amountSD, mintAmountSD);
} else if (functionType == TYPE_WITHDRAW_REMOTE) {
(, uint256 srcPoolId, uint256 dstPoolId, Pool.CreditObj memory c, uint256 amountSD, bytes memory to) = abi.decode(
_payload,
(uint8, uint256, uint256, Pool.CreditObj, uint256, bytes)
);
router.creditChainPath(_srcChainId, srcPoolId, dstPoolId, c);
router.redeemLocalCheckOnRemote(_srcChainId, _srcAddress, _nonce, srcPoolId, dstPoolId, amountSD, to);
}
}
//---------------------------------------------------------------------------
// LOCAL CHAIN FUNCTIONS
function swap(
uint16 _chainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
Pool.CreditObj memory _c,
Pool.SwapObj memory _s,
IStargateRouter.lzTxObj memory _lzTxParams,
bytes calldata _to,
bytes calldata _payload
) external payable onlyRouter {
bytes memory payload = abi.encode(TYPE_SWAP_REMOTE, _srcPoolId, _dstPoolId, _lzTxParams.dstGasForCall, _c, _s, _to, _payload);
_call(_chainId, TYPE_SWAP_REMOTE, _refundAddress, _lzTxParams, payload);
}
function redeemLocalCallback(
uint16 _chainId,
address payable _refundAddress,
Pool.CreditObj memory _c,
IStargateRouter.lzTxObj memory _lzTxParams,
bytes memory _payload
) external payable onlyRouter {
bytes memory payload;
{
(, uint256 srcPoolId, uint256 dstPoolId, uint256 amountSD, uint256 mintAmountSD, bytes memory to) = abi.decode(
_payload,
(uint8, uint256, uint256, uint256, uint256, bytes)
);
// swap dst and src because we are headed back
payload = abi.encode(TYPE_REDEEM_LOCAL_CALL_BACK, dstPoolId, srcPoolId, _c, amountSD, mintAmountSD, to);
}
_call(_chainId, TYPE_REDEEM_LOCAL_CALL_BACK, _refundAddress, _lzTxParams, payload);
}
function redeemLocal(
uint16 _chainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
Pool.CreditObj memory _c,
uint256 _amountSD,
bytes calldata _to,
IStargateRouter.lzTxObj memory _lzTxParams
) external payable onlyRouter {
bytes memory payload = abi.encode(TYPE_WITHDRAW_REMOTE, _srcPoolId, _dstPoolId, _c, _amountSD, _to);
_call(_chainId, TYPE_WITHDRAW_REMOTE, _refundAddress, _lzTxParams, payload);
}
function sendCredits(
uint16 _chainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
Pool.CreditObj memory _c
) external payable onlyRouter {
bytes memory payload = abi.encode(TYPE_ADD_LIQUIDITY, _srcPoolId, _dstPoolId, _c);
IStargateRouter.lzTxObj memory lzTxObj = IStargateRouter.lzTxObj(0, 0, "0x");
_call(_chainId, TYPE_ADD_LIQUIDITY, _refundAddress, lzTxObj, payload);
}
function quoteLayerZeroFee(
uint16 _chainId,
uint8 _functionType,
bytes calldata _toAddress,
bytes calldata _transferAndCallPayload,
IStargateRouter.lzTxObj memory _lzTxParams
) external view returns (uint256, uint256) {
bytes memory payload = "";
Pool.CreditObj memory c = Pool.CreditObj(1, 1);
if (_functionType == TYPE_SWAP_REMOTE) {
Pool.SwapObj memory s = Pool.SwapObj(1, 1, 1, 1, 1, 1);
payload = abi.encode(TYPE_SWAP_REMOTE, 0, 0, 0, c, s, _toAddress, _transferAndCallPayload);
} else if (_functionType == TYPE_ADD_LIQUIDITY) {
payload = abi.encode(TYPE_ADD_LIQUIDITY, 0, 0, c);
} else if (_functionType == TYPE_REDEEM_LOCAL_CALL_BACK) {
payload = abi.encode(TYPE_REDEEM_LOCAL_CALL_BACK, 0, 0, c, 0, 0, _toAddress);
} else if (_functionType == TYPE_WITHDRAW_REMOTE) {
payload = abi.encode(TYPE_WITHDRAW_REMOTE, 0, 0, c, 0, _toAddress);
} else {
revert("Stargate: unsupported function type");
}
bytes memory lzTxParamBuilt = _txParamBuilder(_chainId, _functionType, _lzTxParams);
return layerZeroEndpoint.estimateFees(_chainId, address(this), payload, useLayerZeroToken, lzTxParamBuilt);
}
//---------------------------------------------------------------------------
// dao functions
function setBridge(uint16 _chainId, bytes calldata _bridgeAddress) external onlyOwner {
require(bridgeLookup[_chainId].length == 0, "Stargate: Bridge already set!");
bridgeLookup[_chainId] = _bridgeAddress;
}
function setGasAmount(
uint16 _chainId,
uint8 _functionType,
uint256 _gasAmount
) external onlyOwner {
require(_functionType >= 1 && _functionType <= 4, "Stargate: invalid _functionType");
gasLookup[_chainId][_functionType] = _gasAmount;
}
function approveTokenSpender(
address token,
address spender,
uint256 amount
) external onlyOwner {
IERC20(token).approve(spender, amount);
}
function setUseLayerZeroToken(bool enable) external onlyOwner {
useLayerZeroToken = enable;
}
function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override onlyOwner {
layerZeroEndpoint.forceResumeReceive(_srcChainId, _srcAddress);
}
//---------------------------------------------------------------------------
// generic config for user Application
function setConfig(
uint16 _version,
uint16 _chainId,
uint256 _configType,
bytes calldata _config
) external override onlyOwner {
layerZeroEndpoint.setConfig(_version, _chainId, _configType, _config);
}
function setSendVersion(uint16 version) external override onlyOwner {
layerZeroEndpoint.setSendVersion(version);
}
function setReceiveVersion(uint16 version) external override onlyOwner {
layerZeroEndpoint.setReceiveVersion(version);
}
//---------------------------------------------------------------------------
// INTERNAL functions
function txParamBuilderType1(uint256 _gasAmount) internal pure returns (bytes memory) {
uint16 txType = 1;
return abi.encodePacked(txType, _gasAmount);
}
function txParamBuilderType2(
uint256 _gasAmount,
uint256 _dstNativeAmount,
bytes memory _dstNativeAddr
) internal pure returns (bytes memory) {
uint16 txType = 2;
return abi.encodePacked(txType, _gasAmount, _dstNativeAmount, _dstNativeAddr);
}
function _txParamBuilder(
uint16 _chainId,
uint8 _type,
IStargateRouter.lzTxObj memory _lzTxParams
) internal view returns (bytes memory) {
bytes memory lzTxParam;
address dstNativeAddr;
{
bytes memory dstNativeAddrBytes = _lzTxParams.dstNativeAddr;
assembly {
dstNativeAddr := mload(add(dstNativeAddrBytes, 20))
}
}
uint256 totalGas = gasLookup[_chainId][_type].add(_lzTxParams.dstGasForCall);
if (_lzTxParams.dstNativeAmount > 0 && dstNativeAddr != address(0x0)) {
lzTxParam = txParamBuilderType2(totalGas, _lzTxParams.dstNativeAmount, _lzTxParams.dstNativeAddr);
} else {
lzTxParam = txParamBuilderType1(totalGas);
}
return lzTxParam;
}
function _call(
uint16 _chainId,
uint8 _type,
address payable _refundAddress,
IStargateRouter.lzTxObj memory _lzTxParams,
bytes memory _payload
) internal {
bytes memory lzTxParamBuilt = _txParamBuilder(_chainId, _type, _lzTxParams);
uint64 nextNonce = layerZeroEndpoint.getOutboundNonce(_chainId, address(this)) + 1;
layerZeroEndpoint.send{value: msg.value}(_chainId, bridgeLookup[_chainId], _payload, _refundAddress, address(this), lzTxParamBuilt);
emit SendMsg(_type, nextNonce);
}
function renounceOwnership() public override onlyOwner {}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
interface IStargateRouter {
struct lzTxObj {
uint256 dstGasForCall;
uint256 dstNativeAmount;
bytes dstNativeAddr;
}
function addLiquidity(
uint256 _poolId,
uint256 _amountLD,
address _to
) external;
function swap(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLD,
uint256 _minAmountLD,
lzTxObj memory _lzTxParams,
bytes calldata _to,
bytes calldata _payload
) external payable;
function redeemRemote(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLP,
uint256 _minAmountLD,
bytes calldata _to,
lzTxObj memory _lzTxParams
) external payable;
function instantRedeemLocal(
uint16 _srcPoolId,
uint256 _amountLP,
address _to
) external returns (uint256);
function redeemLocal(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress,
uint256 _amountLP,
bytes calldata _to,
lzTxObj memory _lzTxParams
) external payable;
function sendCredits(
uint16 _dstChainId,
uint256 _srcPoolId,
uint256 _dstPoolId,
address payable _refundAddress
) external payable;
function quoteLayerZeroFee(
uint16 _dstChainId,
uint8 _functionType,
bytes calldata _toAddress,
bytes calldata _transferAndCallPayload,
lzTxObj memory _lzTxParams
) external view returns (uint256, uint256);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
interface IStargateReceiver {
function sgReceive(
uint16 _chainId,
bytes memory _srcAddress,
uint256 _nonce,
address _token,
uint256 amountLD,
bytes memory payload
) external;
}// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
// libraries
import "@openzeppelin/contracts/math/SafeMath.sol";
contract LPTokenERC20 {
using SafeMath for uint256;
//---------------------------------------------------------------------------
// CONSTANTS
string public name;
string public symbol;
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
// set in constructor
bytes32 public DOMAIN_SEPARATOR;
//---------------------------------------------------------------------------
// VARIABLES
uint256 public decimals;
uint256 public totalSupply;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
mapping(address => uint256) public nonces;
//---------------------------------------------------------------------------
// EVENTS
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value);
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
uint256 chainId;
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name)),
keccak256(bytes("1")),
chainId,
address(this)
)
);
}
function _mint(address to, uint256 value) internal {
totalSupply = totalSupply.add(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(address(0), to, value);
}
function _burn(address from, uint256 value) internal {
balanceOf[from] = balanceOf[from].sub(value);
totalSupply = totalSupply.sub(value);
emit Transfer(from, address(0), value);
}
function _approve(
address owner,
address spender,
uint256 value
) private {
allowance[owner][spender] = value;
emit Approval(owner, spender, value);
}
function _transfer(
address from,
address to,
uint256 value
) private {
balanceOf[from] = balanceOf[from].sub(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(from, to, value);
}
function approve(address spender, uint256 value) external returns (bool) {
_approve(msg.sender, spender, value);
return true;
}
function transfer(address to, uint256 value) external returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool) {
if (allowance[from][msg.sender] != uint256(-1)) {
allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);
}
_transfer(from, to, value);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(msg.sender, spender, allowance[msg.sender][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(msg.sender, spender, allowance[msg.sender][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external {
require(deadline >= block.timestamp, "Bridge: EXPIRED");
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, "Bridge: INVALID_SIGNATURE");
_approve(owner, spender, value);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.7.6;
pragma abicoder v2;
import "../Pool.sol";
interface IStargateFeeLibrary {
function getFees(
uint256 _srcPoolId,
uint256 _dstPoolId,
uint16 _dstChainId,
address _from,
uint256 _amountSD
) external returns (Pool.SwapObj memory s);
function getVersion() external view returns (string memory);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;
interface ILayerZeroReceiver {
// @notice LayerZero endpoint will invoke this function to deliver the message on the destination
// @param _srcChainId - the source endpoint identifier
// @param _srcAddress - the source sending contract address from the source chain
// @param _nonce - the ordered message nonce
// @param _payload - the signed payload is the UA bytes has encoded to be sent
function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;
import "./ILayerZeroUserApplicationConfig.sol";
interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
// @notice send a LayerZero message to the specified address at a LayerZero endpoint.
// @param _dstChainId - the destination chain identifier
// @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
// @param _payload - a custom bytes payload to send to the destination contract
// @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
// @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
// @param _adapterParams - parameters for custom functionality. ie: pay for a specified destination gasAmount, or receive airdropped native gas from the relayer on destination
function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;
// @notice used by the messaging library to publish verified payload
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source contract (as bytes) at the source chain
// @param _dstAddress - the address on destination chain
// @param _nonce - the unbound message ordering nonce
// @param _gasLimit - the gas limit for external contract execution
// @param _payload - verified payload to send to the destination contract
function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;
// @notice get the inboundNonce of a receiver from a source chain which could be EVM or non-EVM chain
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source chain contract address
function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);
// @notice get the outboundNonce from this source chain which, consequently, is always an EVM
// @param _srcAddress - the source chain contract address
function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);
// @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
// @param _dstChainId - the destination chain identifier
// @param _userApplication - the user app address on this EVM chain
// @param _payload - the custom message to send over LayerZero
// @param _payInZRO - if false, user app pays the protocol fee in native token
// @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);
// @notice get this Endpoint's immutable source identifier
function getChainId() external view returns (uint16);
// @notice the interface to retry failed message on this Endpoint destination
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source chain contract address
// @param _payload - the payload to be retried
function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;
// @notice query if any STORED payload (message blocking) at the endpoint.
// @param _srcChainId - the source chain identifier
// @param _srcAddress - the source chain contract address
function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);
// @notice query if the _libraryAddress is valid for sending msgs.
// @param _userApplication - the user app address on this EVM chain
function getSendLibraryAddress(address _userApplication) external view returns (address);
// @notice query if the _libraryAddress is valid for receiving msgs.
// @param _userApplication - the user app address on this EVM chain
function getReceiveLibraryAddress(address _userApplication) external view returns (address);
// @notice query if the non-reentrancy guard for send() is on
// @return true if the guard is on. false otherwise
function isSendingPayload() external view returns (bool);
// @notice query if the non-reentrancy guard for receive() is on
// @return true if the guard is on. false otherwise
function isReceivingPayload() external view returns (bool);
// @notice get the configuration of the LayerZero messaging library of the specified version
// @param _version - messaging library version
// @param _chainId - the chainId for the pending config change
// @param _userApplication - the contract address of the user application
// @param _configType - type of configuration. every messaging library has its own convention.
function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);
// @notice get the send() LayerZero messaging library version
// @param _userApplication - the contract address of the user application
function getSendVersion(address _userApplication) external view returns (uint16);
// @notice get the lzReceive() LayerZero messaging library version
// @param _userApplication - the contract address of the user application
function getReceiveVersion(address _userApplication) external view returns (uint16);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;
interface ILayerZeroUserApplicationConfig {
// @notice set the configuration of the LayerZero messaging library of the specified version
// @param _version - messaging library version
// @param _chainId - the chainId for the pending config change
// @param _configType - type of configuration. every messaging library has its own convention.
// @param _config - configuration in the bytes. can encode arbitrary content.
function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external;
// @notice set the send() LayerZero messaging library version to _version
// @param _version - new messaging library version
function setSendVersion(uint16 _version) external;
// @notice set the lzReceive() LayerZero messaging library version to _version
// @param _version - new messaging library version
function setReceiveVersion(uint16 _version) external;
// @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload
// @param _srcChainId - the chainId of the source chain
// @param _srcAddress - the contract address of the source contract at the source chain
function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external;
}{
"optimizer": {
"enabled": true,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"metadata": {
"useLiteralContent": true
},
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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Bridge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"bytes","name":"","type":"bytes"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"cachedSwapLookup","outputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amountLD","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"payload","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"bool","name":"_fullMode","type":"bool"}],"name":"callDelta","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"}],"name":"clearCachedSwap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"uint256","name":"_weight","type":"uint256"}],"name":"createChainPath","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"uint8","name":"_sharedDecimals","type":"uint8"},{"internalType":"uint8","name":"_localDecimals","type":"uint8"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"}],"name":"createPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"components":[{"internalType":"uint256","name":"credits","type":"uint256"},{"internalType":"uint256","name":"idealBalance","type":"uint256"}],"internalType":"struct Pool.CreditObj","name":"_c","type":"tuple"}],"name":"creditChainPath","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"contract Factory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcPoolId","type":"uint16"},{"internalType":"uint256","name":"_amountLP","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"instantRedeemLocal","outputs":[{"internalType":"uint256","name":"amountSD","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"mintFeeOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"protocolFeeOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint8","name":"_functionType","type":"uint8"},{"internalType":"bytes","name":"_toAddress","type":"bytes"},{"internalType":"bytes","name":"_transferAndCallPayload","type":"bytes"},{"components":[{"internalType":"uint256","name":"dstGasForCall","type":"uint256"},{"internalType":"uint256","name":"dstNativeAmount","type":"uint256"},{"internalType":"bytes","name":"dstNativeAddr","type":"bytes"}],"internalType":"struct IStargateRouter.lzTxObj","name":"_lzTxParams","type":"tuple"}],"name":"quoteLayerZeroFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"uint256","name":"_amountLP","type":"uint256"},{"internalType":"bytes","name":"_to","type":"bytes"},{"components":[{"internalType":"uint256","name":"dstGasForCall","type":"uint256"},{"internalType":"uint256","name":"dstNativeAmount","type":"uint256"},{"internalType":"bytes","name":"dstNativeAddr","type":"bytes"}],"internalType":"struct IStargateRouter.lzTxObj","name":"_lzTxParams","type":"tuple"}],"name":"redeemLocal","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amountSD","type":"uint256"},{"internalType":"uint256","name":"_mintAmountSD","type":"uint256"}],"name":"redeemLocalCallback","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"uint256","name":"_amountSD","type":"uint256"},{"internalType":"bytes","name":"_to","type":"bytes"}],"name":"redeemLocalCheckOnRemote","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"uint256","name":"_amountLP","type":"uint256"},{"internalType":"uint256","name":"_minAmountLD","type":"uint256"},{"internalType":"bytes","name":"_to","type":"bytes"},{"components":[{"internalType":"uint256","name":"dstGasForCall","type":"uint256"},{"internalType":"uint256","name":"dstNativeAmount","type":"uint256"},{"internalType":"bytes","name":"dstNativeAddr","type":"bytes"}],"internalType":"struct IStargateRouter.lzTxObj","name":"_lzTxParams","type":"tuple"}],"name":"redeemRemote","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"}],"name":"retryRevert","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"bytes","name":"","type":"bytes"},{"internalType":"uint256","name":"","type":"uint256"}],"name":"revertLookup","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"components":[{"internalType":"uint256","name":"dstGasForCall","type":"uint256"},{"internalType":"uint256","name":"dstNativeAmount","type":"uint256"},{"internalType":"bytes","name":"dstNativeAddr","type":"bytes"}],"internalType":"struct IStargateRouter.lzTxObj","name":"_lzTxParams","type":"tuple"}],"name":"revertRedeemLocal","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"}],"name":"sendCredits","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"contract Bridge","name":"_bridge","type":"address"},{"internalType":"contract Factory","name":"_factory","type":"address"}],"name":"setBridgeAndFactory","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"bool","name":"_batched","type":"bool"},{"internalType":"uint256","name":"_swapDeltaBP","type":"uint256"},{"internalType":"uint256","name":"_lpDeltaBP","type":"uint256"},{"internalType":"bool","name":"_defaultSwapMode","type":"bool"},{"internalType":"bool","name":"_defaultLPMode","type":"bool"}],"name":"setDeltaParam","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"address","name":"_feeLibraryAddr","type":"address"}],"name":"setFeeLibrary","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"uint256","name":"_mintFeeBP","type":"uint256"}],"name":"setFees","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"setMintFeeOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"setProtocolFeeOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"bool","name":"_swapStop","type":"bool"}],"name":"setSwapStop","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"uint16","name":"_weight","type":"uint16"}],"name":"setWeightForChainPath","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"uint256","name":"_amountLD","type":"uint256"},{"internalType":"uint256","name":"_minAmountLD","type":"uint256"},{"components":[{"internalType":"uint256","name":"dstGasForCall","type":"uint256"},{"internalType":"uint256","name":"dstNativeAmount","type":"uint256"},{"internalType":"bytes","name":"dstNativeAddr","type":"bytes"}],"internalType":"struct IStargateRouter.lzTxObj","name":"_lzTxParams","type":"tuple"},{"internalType":"bytes","name":"_to","type":"bytes"},{"internalType":"bytes","name":"_payload","type":"bytes"}],"name":"swap","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"uint256","name":"_srcPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstPoolId","type":"uint256"},{"internalType":"uint256","name":"_dstGasForCall","type":"uint256"},{"internalType":"address","name":"_to","type":"address"},{"components":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"eqFee","type":"uint256"},{"internalType":"uint256","name":"eqReward","type":"uint256"},{"internalType":"uint256","name":"lpFee","type":"uint256"},{"internalType":"uint256","name":"protocolFee","type":"uint256"},{"internalType":"uint256","name":"lkbRemove","type":"uint256"}],"internalType":"struct Pool.SwapObj","name":"_s","type":"tuple"},{"internalType":"bytes","name":"_payload","type":"bytes"}],"name":"swapRemote","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"withdrawMintFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_poolId","type":"uint256"},{"internalType":"address","name":"_to","type":"address"}],"name":"withdrawProtocolFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]Contract Creation Code
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